Sigmakey vs Grapheme

Sigmakey is a math keyboard for people who need to type actual math, anywhere you can type at all. Fractions, exponents, roots, Greek letters, and matrices sit one tap away, and the cursor moves right into a numerator or an exponent, so scientific notation looks the way it should. - A full math keyboard layout that works in any app with a text field - A two-dimensional field with a cursor that steps into fractions and powers - Type LaTeX, plain Unicode, or a rendered image, whichever the app expects - Everything typeset on device, with no network - Search for a symbol, or grab a recent or a favorite Drop an equation into a note, a message, or a homework app without hunting through menus. Privacy Policy: https://docs.google.com/document/d/e/2PACX-1vTDX9pxPOlUJl_skVUHPi99mAw0y2B2BYd_v1mJkoF3xW3rlOcW5KlYd4t93MMbbGhctSTnBTy7d_l6/pub Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Grapheme is a pocket museum of the characters the world writes with, as Unicode records them. The entire code space is laid out in one grid, grouped by block and ready to wander. A COLLECTION FULL OF SURPRISES • The complete Unicode 16 code space, organized by block • Wander from Egyptian hieroglyphs to alchemical symbols, Byzantine musical notation, mahjong tiles, and emoji • Jump to any block instantly with the block picker, and pin the ones you visit most • Even characters your device has no font for get a meaningful placeholder glyph, so nothing shows up as an empty box CHARACTER DETAILS AT A TAP Tap any cell to see everything about that character: • Official Unicode name and block • Code point in U+ notation • Byte encodings: UTF-8, UTF-16 (BE and LE), UTF-32 (BE and LE) • HTML entity FAST SEARCH • Find characters by name: try “snowman”, “dragon”, or “pile of poo” • Look up a code point directly by its hex value • Paste in any text to see the code points it breaks down into, including the ZWJ sequences inside an emoji FAVORITES • Mark characters you use often and come back to them in one tap WORKS COMPLETELY OFFLINE The full Unicode 16 character database ships inside the app. Browse, search, and inspect encodings anywhere, with no network connection required. MADE FOR DEVELOPERS, DESIGNERS, AND THE CURIOUS Debugging a text-encoding issue? Hunting for the perfect arrow, box-drawing character, or mathematical symbol? Exploring ancient scripts and the far reaches of the astral planes? Grapheme puts the entire Unicode standard at your fingertips.